Kearn G C, Whittington I D
School of Biological Sciences, University of East Anglia, Norwich, U.K.
Int J Parasitol. 1991 Oct;21(6):739-41. doi: 10.1016/0020-7519(91)90090-t.
Swimming in a sub-adult monogenean parasite is reported for the first time. When detached from the substrate, a specimen of an undescribed species of Entobdella from the ventral skin surface of the cow-tailed ray, Dasyatis sephen, was found to propel itself vigorously through the water, head-first, by rapid dorso-ventral body undulations travelling in an antero-posterior direction. These waves pass in the opposite direction to the slower breathing (?) undulations exhibited by the attached parasite. Benedeniella macrocolpa from another elasmobranch host and benedeniines from teleost fishes merely made uncoordinated wriggling movements when detached from the substrate. The possible function of swimming in monogeneans is discussed.
首次报道了亚成体单殖吸虫的游泳行为。当从基质上脱离时，发现一条来自牛尾魟（Dasyatis sephen）腹侧皮肤表面的未描述过的Entobdella属物种标本，通过快速的背腹向身体波动，从前往后地在水中剧烈向前推进。这些波动的方向与附着的寄生虫所表现出的较慢的呼吸（？）波动方向相反。来自另一种软骨鱼宿主的巨口贝内登虫（Benedeniella macrocolpa）和硬骨鱼类的贝内登虫类在从基质上脱离时仅做出不协调的扭动动作。文中讨论了单殖吸虫游泳的可能功能。
